Sirhaeng hagi shwiun 21-segihyŏng chean chedo
By: Ŏ Yong-il chiŭm.
Edition: Chʻopʻan
Publisher: Hanʼguk Nŭngnyul Hyŏphoe
Published: 2003
Place of publication: Sŏul
Language: kor
Number of pages: 263
Subjects: Suggestion systems -- Korea (South)
Other titles: Sirhaeng hagi shwiun isibil segihyŏng chean chedo; Sirhaeng hagi shwiun chean chedo; Chean chedo
Notes: "Chejo ŏpchong esŏ pʻanmae, sŏbisŭ ŏpchong kkaji"--Cover.